Weft-detecting mechanism



July 8, '1924. 1,500,205

E. H. RYON WEFT DETECTING MECHANISM Filed April 17, 1922 0 11 wfluxa t flttorngys Shown i my prior- Patent No.

Patented July 8, 1924.

j UNITED STATES 1,500, 5; PATENT O ErrAn. RYON, or WALTHAM, ianssncnusnrrsnssreivon TO CROMPTO'N & KNowLEs' Loom .wonxs, or woncnsrna, mnssncnusnrrs; A CORPORATION or -MASSA- onusnrrs.

WEFT-DETECTING MECHANISM. f

" 5 State of Massachusetts, have invented anew and useful Weft-Detecting Mechanism, of which the following is a specification.

i This invention relates to an improvement in-weft detecting mechanism of the'type sued September 14, 19 20. j

' his the object of my present'invention to improve the construction therein shown *to the end that better bearing surfaces may 1 be provided and that accidental separation of the parts, particularly when detached from a loom,'may be prevented;

-My invention further relates to arrangements and combinations of parts which will 20 be hereinafter describedandmore particularly pointed out in the" ap'pendedclaims.

A=p'referred form of my invention 7 is shown in the drawing,- in which- A Fig. l isqaplanyiew of my improved weft detect-ing mechanism;

Fig. 2 is a sectional elevation taken along the line 2-2 in Fig. 1; and

Fig. 3 is a sectional plan view. Referring to the drawing, I have shown a stand 10 in which a box-like casing 11 is slidably mounted. A fixed detector 12 is secured to the rear end of the casing 11 and a movable detector 13 is pivoted at 14 to said casing. Rearward movement of the detectors and slide is limited by a rod 15 slidable' in said casing and having a hook-shaped rear end 16 engaging the rear side of a lateral projection 17 on the movable detector 13. The front end of the rod 15 is offset to provide a threaded bearing for an adjusting screw 18 which enga es the front face of the stand 10 and thus Timit-s rearward movement of the slide and detectors.

The stand 10 is provided with a cap or cover 20 (Fig. 2) in which a spring 21 is supported on a rod 22 threaded in the rear end of the cover 20 and having a shoulder against which a bracket 23 on the slide 11 is firmly seated by the spring 21. The shoulder on the rod 22 thus co-operates with the sliding rod 15 to limit rearward movement of the casing or slide 11.

A second rod 25 is slidable in the casing 11 and at its rearward end engages the for- Application filed April 17, 1922.1 .Serial No.553,668.

ward side of the projection 171- 11 the mov- 5'5 able detector 13. The rod 25 is provided with a substantially U -shaped return bend 26 at' its forward endand the rearward end 2? of "thereturn' portion isoffset inwardly,

asshown in Fig. 3. [At its forwardendgthe rod, 25 engages an arm 28 fixed on a shaft 29 mounted in bearings 30 and 31'and connected by an arm 32 to a rod 33 slidably mounted inane; upward projection 3t'on' the stand lO. A spring 35 yieldingly presses the arm 28 against the laterally projecting forwardend of the rod 25.

The rod 33 normally into the pathi'of the lever 36 movable;i-n.a. yertical slotin the projection 34. If the detector 13 engages a 'sufiicientsup'ply of weft in the ac,- tive shuttle, it will be held, "from swinging movement and will push the rod25 forward, withdrawing the rod :33from the :pathof the-lever 36 and thusrenderingthe filling replenishing mechanism inoperative.

Ifcthe weft is substantiallyexhausted so that it does not engage;= .the iendfo-f the m ov-gg able detector 13, the detector swings on its pivot 14 as the slide or casing 11 moves forward, leaving the rod 33 in the path of the lever 36 and indicating weft exhaustion and the necessity for weft replenishment. For a more complete description of the general construction and operation of this type of weftdetecting mechanism, reference is made to my prior patent above noted.

My present invention relates particularly to the construction of the sliding rod 25 with its return bend 26 and its offset end 27. Several important advantages are secured by the use of the sliding rod formed as shown and described. The bearing surface against the yielding arm 28 is several times as great as that shown in my prior patent.

- The return bend 26 slides in a slot or recess 25 and 26 may be separated by inserting a screw driver or similar tool between them where they project beyond the casing.

, Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosedothen wise than as set forth in the claims but what I claim is 1. In a loom, weft detecting mechanism comprising a stand, a casing slidable in said stand, fixed and movable weft detectors mounted on said casing and projecting rearwardly therefrom, an adjustable rearward stop for said movable detector, a yieldingly mounted member connected to indicate substantial weft exhaustion, and a rod slidable in said casing, and disposed between said member and said movable detector, said rod having a laterally projecting portion affording an enlarged bearingvsurface engaging said member and also preventing angular displacement of said rod.

2. In a loom, weft detecting mechanism comprising a stand, a casing slidable in said stand, fixed and movable weft detectors mounted on said casing and projecting rearwardly' therefrom, an adjustable'rearward stop for said movable detector, a yieldingly mounted member connected to indicate substantial weft exhaustion, a rod slidable in sand casing and disposed between said member and said movable detector, and means to prevent accidental separation of said rod and casing, said'means being releasable from 0 without said casing.

beyondsaid lateral portion and extending so within said casing to preventangular movement of said rod. 7 v

L. In a loom, weftrdetecting mechanism comprising a stand, a casing slidable in said stand, fixed and movable, weft detectorsmounted on sa1d casing and. pro ecting rearwardly therefrom, anadjustable rearward stop for said movable detector, a yieldingly mounted member connected toindicate substantial weft exhaustiomand a rod slidable in said casingand disposed between said member and said movable detector, said i'od having a substantially U-shaped return bend with an offset innerend, and said casing having aportion engaged by said offset end as said rod slides outwardly in said casing and preventing displacement thereof. W

In testimony whereof I have hereunto affixed my signature,

EPPA" H; RYON, 

